PowerSports Business

October 2, 2017

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www.PowersportsBusiness.com Ski-Doo, Polaris, Arctic Cat reveal new sleds at Official Start of Winter At Minnesota's Haydays in September, Ski- Doo, Polaris and Arctic Cat unveiled race-only snowmobiles to crowds anxious to see new models, and to see more snow. BRP introduced the completely redesigned 2018 Ski-Doo MXZx 600RS E-TEC racing snowmobile designed for North American and European snocross tracks. The 2018 MXZx 600RS E-TEC is based on the REV Gen4 platform for superior rider ergonomics and handling in rough conditions. Like all Gen4 sleds, the narrow design featur- ing centralized mass is agile and responsive, while the Ergo Step side panels and beveled tunnel gives racers enormous freedom to ride the way they want — without interference from the chassis. Other features unique to the racing sled include a tilted tunnel with short heat exchanger, new motocross inspired seat, racing footholds and a small fuel tank. The RAS 3 front suspension with unique steering system provides ultra precise handling with less effort so racers can concentrate on choosing the best lines. To further assist pre- cise steering, the sled is equipped with the new lightweight Pilot R2 skis that were race tested last year by top pros Tim Tremblay and Lincoln Lemieux. One thing familiar will be the Racing rMo- tion skid frame in back — but it, too, receives some major upgrades. There's a new KYB pig- gyback 46mm center shock, new motion ratio and calibration for the rear shock, and lighter weight components throughout. The special — for racing only — Rotax 600RS E-TEC engine is also all-new for 2018, with more horsepower and extremely fast dynamic response. E-TEC direct injec- tion makes its racing debut and, combined with the booster injectors first deployed on the Rotax 850 E-TEC, delivers that quick response and contributes to the overall power gains. Other ideas adapted from the 850 for this specialty engine include a shorter intake tract with double reeds, digital eRAVE and lightweight exhaust system. The 600RS E-TEC also gains a little more displacement as it grows to 599.4cc. The updated power- pack was completely reconfigured to fit in the efficient REV Gen4 platform. New this year is a Brembo four-piston brake caliper mated to a new stainless steel rotor, delivering stronger, more consistent perfor- mance and better durability. 2018 POLARIS 600R Polaris released its 2018 600R race sled during Haydays, and the model continues to push and evolve technology. Walker Evans Velocity front suspension shocks and springs are newly added, and the position-sensitive shock allows for a softer initial setting but still has stiffness at bottom for big hits. A new upper front control arm is designed to accommodate a new shock reservoir posi- tion and adds protection to the shock. New taller spindles improve cornering and add ground clearance (0.5 inches taller). A new cutch features a straight-cut sheave angle for improved holeshot performance due to better belt grip. New floating stainless steel brake rotor and brake pads provide improved stopping power, performance and durability. The lighter-weight rotor is floating to prevent warping. Running boards feature new stock cutouts Haydays finds new race models take the stage See Haydays, Page 26 The 2018 Ski-Doo MXZx 600RS E-TEC features a Rotax engine that is also all-new for 2018, with more horsepower and extremely fast dynamic response that racers will appreciate. Photo courtesy of BRP The 2018 race-only Polaris 600R adds Walker Evans Veloc- ity front suspension shocks and springs. Photo courtesy of Polaris

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